Can i use a charger that provides the same voltage but a different amperage – ask leo! electricity meaning

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Particularly when it comes to popular circular power connectors, make sure the expectations match: if the device expects the center connector to be positive and the outer ring to be negative, your power supply’s connector must match. There’s no getting around this. e sampark electricity bill payment Failure to get it right at best simply doesn’t work, and at worst damages the device. Look carefully for indicators on both the power supply and the device to which you’re connecting it.

The good news here is that there are some standards where the polarity is always the same and always correct. gas efficient cars 2015 For example, USB is a standard that more and more devices are using to supply power. In that same vein, if you’re replacing a power supply that uses a custom connector used only by one manufacturer, then you won’t have to worry about polarity either. Summary

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This is a great and *necessary* question-and-answer. At the risk of seeming politically incorrect, it may be more helpful to female computer users than male. gas house dance hall In 2007, my terrific but three-year-old Lenovo laptop was fried after a now defunct, major electronics dealer opened a Kensington “choose-your-AC-tip” package, stuck it into the power supply, and “told me” it was right. The laptop fried within a week, and I resignedly concluded that its age was the problem. Several months later, packing the otherwise new Kensington adapter set to sell, I read the Instructions that came with it. I also noticed that the little baggie that held the color tip I *should* have used was unopened. tgas advisors company profile In short, I settled with the retailer’s insurance carrier on the eve of its bankruptcy. Otherwise, I would have been out not only an excellent machine, but the amount I paid for the tips. gas examples matter I’m making this comment to warn husbands with non-electronic-savvy wives not to allow any “expert” to tamper with equipment on the basis of the (stereotypical) assumption that because an “expert” is male, he knows all about electricity and how it works. (I hope I don’t offend anyone, but I have seen other cases where female computer users just assume that men understand all about electricity.)

Chargers come in many qualities. A 19V charger with lower quality may have 21-22V when no current is drawn. However, a charger intended for brand A with 1.6 Amp will have about 19V at full charge and operation simultaneously. With the battery charged, it will have about 19.5-20.5V output fed to a laptop and the battery will continue charging at a negligible trickle rate. When a more powerful charger with 2.5 Amp rating is used, intended for laptop B, with higher power consumption, its output with the laptop A maybe as high as 20-21V with full current drawn and higher after charging finishes. electricity 101 presentation This will cause a higher charge to a battery, even after it is completely full and shorten its life and may even cause an explosion. The chargers are PWM regulated, and ideally such problems would be avoided, but to keep costs down, regulation is not 100% and compromises against costs are made. Exceptionally good chargers are not common and these cost very high. At home, I use a variable Voltage and current supply to monitor and adjust charging curve against time to match aging characteristics of the battery. Travelling, I use chargers with a display and Voltage adjustment slider to prevent overcharging at high levels for my two laptops.